diff --git a/mathics/builtin/drawing/plot_listplot.py b/mathics/builtin/drawing/plot_listplot.py
index 7ff1468eb..277e8986d 100644
--- a/mathics/builtin/drawing/plot_listplot.py
+++ b/mathics/builtin/drawing/plot_listplot.py
@@ -386,7 +386,7 @@ class DiscretePlot(_ListPlot):
       <dd>plots $expr$ with $x$ ranging from $n_{min}$ to $n_{max}$ usings steps $dn$.
 
       <dt>'DiscretePlot'[{$expr_1$, $expr_2$, ...}, ...]
-      <dd>plots the values of all $expri$.
+      <dd>plots the values of all $expr_{i}$.
     </dl>
 
     The number of primes for a number $k$:
diff --git a/mathics/builtin/files_io/files.py b/mathics/builtin/files_io/files.py
index cd2d10f66..644c93b41 100644
--- a/mathics/builtin/files_io/files.py
+++ b/mathics/builtin/files_io/files.py
@@ -358,7 +358,7 @@ class Get(PrefixOperator):
       <dd>Set the search path to the single directory $dir$ in the 'Get'.
       <dt>'Path'->{"$dir_1$", "$dir_2$", ...}
       <dd>Set the search path, '$PATH' to the list of directories.
-      <dt>'Character_Encoding'->"{$name}"
+      <dt>'CharacterEncoding'->"{$name}"
       <dd>Set the file input encoding to $name$.
     </dl>
 
diff --git a/mathics/core/convert/expression.py b/mathics/core/convert/expression.py
index 60784bfea..5611aebc1 100644
--- a/mathics/core/convert/expression.py
+++ b/mathics/core/convert/expression.py
@@ -24,7 +24,7 @@ def to_expression(
     elements_conversion_fn: Callable = from_python,
 ) -> Expression:
     """
-    This is an expression constructor that can be used when the Head and elements are not Mathics
+    This is an expression constructor that can be used when the Head and elements are not Mathics3
     objects. For example to_expression("Plus", 1, 2, 3)
     """
     if isinstance(head, str):
@@ -70,7 +70,7 @@ def to_mathics_list(
 ) -> ListExpression:
     """
     This is an expression constructor for list that can be used when
-    the elements are not Mathics objects.
+    the elements are not Mathics3 objects.
 
     For example::
 
@@ -90,7 +90,7 @@ def to_mathics_list(
 
 def to_numeric_args(mathics_args: BaseElement, evaluation) -> tuple:
     """
-    Convert Mathics arguments, such as the arguments in an evaluation
+    Convert Mathics3 arguments, such as the arguments in an evaluation
     method a Python list that is suitable for feeding as arguments
     into SymPy, NumPy, or mpmath.
 
diff --git a/mathics/core/expression.py b/mathics/core/expression.py
index 58f1f744a..d39de744b 100644
--- a/mathics/core/expression.py
+++ b/mathics/core/expression.py
@@ -621,8 +621,9 @@ def evaluate(
 
     def evaluate_elements(self, evaluation) -> "Expression":
         """
-        return a new expression with the head and the
-        evaluable elements evaluated, according to the attributes.
+        Return a new expression with the head and the
+        evaluable elements evaluated, taking into account the
+        the expression's head attribute and its HOLD properties.
         """
         head = self._head
         if isinstance(head, EvalMixin):
diff --git a/mathics/session.py b/mathics/session.py
index 9db69f9b9..ad9acd628 100644
--- a/mathics/session.py
+++ b/mathics/session.py
@@ -4,9 +4,9 @@
 
 In particular we provide:
 
-* a class to create a Mathics session,
-* load the Mathics core settings files (written in  WL),
-* read and set Mathics Settings.
+* a class to create a Mathics3 session,
+* load the Mathics core settings files (written in WL),
+* read and set Mathics3 Settings.
 """
 
 import os
@@ -84,7 +84,7 @@ def load_default_settings_files(
 
 
 def get_settings_value(definitions: Definitions, setting_name: str):
-    """Get a Mathics Settings` value with name "setting_name" from
+    """Get a Mathics3 Settings` value with name "setting_name" from
     definitions. If setting_name is not defined return None.
     """
     try: